Tuesday, November 25, 2014
Sharpless 132, Sh2-132, in visual spectrum
I published the original photo of Sharpless 132 at November 11 but only in mapped colors. In this version, the narrowband channels are combined so, that the resulting image is as close as possible to a visual spectrum of human eye. Red is the dominating color since the ionized hydrogen, H-alpha, is the strongest emission line and it's emitting deep red light. Blue hues are coming from the emission of an ionized oxygen, O-III.
A furious cosmic horse gets blinded by a divine blue light
Sharpless 132 (Sh2-132) in Cepheus
Image is in visual colors, if human eye could be able to see colors in extremely low light, most emission nebulae appears in deep red color due to dominance of an ionized hydrogen, H-alpha. Blue color is coming from the emission of an ionized oxygen, O-III.
An experimental starless version
A closeup composition
INFO
Sharpless 132 is a very faint emission nebula, it locates at the border of Cepheus and Lacerta. Distance is about 10.000 lightyears. My photo covers about one square degree of the sky (63x63"). The blue color in the image is from the emission of an ionized Oxygen (O-III). "The divine blue light" at horses face seems to be an Oxygen jet of some kind, or it's just a tens of light years long oddly shaped area of glowing gas. The shape can be seen in H-alpha channel too. (Ionized Hydrogen)
Technical details
Processing work flow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2
Astrodon filter, 5nm H-alpha
Astrodon filter, 3nm O-III
Exposure times
H-alpha, 9 x 1200s = 3h
O-III, 3 x 1200s = 1h
S-II, 3x1200s = 1h
A single un cropped, calibrated and stretched 20 min. H-alpha frame
Tuesday, November 18, 2014
Soul Nebula, IC 1848, as a two frame mosaic
This image is originally shot this Autumn between 27 and 29.10. I haven't publish it before, since I have had so much material to share. The new imaging system gives me a nice field of view, with a high resolution.
63x63 arc minutes at a scale of 0,95 arc seconds/pixel. That's over a square degree of sky.
IC 1848, the Soul Nebula
Ra 02h 51m 36.24s Dec +60° 26′ 53.9" Click for a large image!
Mapped colors from an emission of the ionized elements, Red=Sulfur, Green=Hydrogen and the Blue =Oxygen. The photo is stitched together from two separate shots.
An experimental starless view
Details of the actual nebula stands out better in this starless view.
Info
Soul Nebula, (Sh2-199, LBN 667) is an emission nebula in constellation Cassiopeia. IC 1848 is a cluster inside Soul Nebula. Distance is about 7.500 light years. This complex is a Eastern neighbor of IC 1805, the "Heart Nebula" and they are often mentioned together as Heart and Soul.
A wider field photo
In this wide field image of mine, the Soul Nebula is shown with its neighbor, the Heart nebula. Image is shot with the Canon EF 200mm f1.8 lens, Baader narrowband filters and the QHY9 cooled astronomical camera. My older photos of the Soul nebula can be seen HERE
Nebula in visual spectrum
Red is a dominant color since the strongest emission line of hydrogen, H-alpha, emits red light. Bluish hues are from ionized oxygen, O-III
Hydrogen alpha image
Nebula in H-alpha light alone.
Technical details
Processing work flow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2
Astrodon filter, 5 nm H-alpha
Exposure times
H-alpha, 24 x 1200s = 8h (4h/panel)
O-III, 6x1200 (1h/panel), binned 4x4
S-II, 6x1200 (1h/panel), binned 4x4
Total 12h
O-III, 6x1200 (1h/panel), binned 4x4
S-II, 6x1200 (1h/panel), binned 4x4
Total 12h
Saturday, November 15, 2014
APOD by NASA, Astro Anarchy gets published
Astronomy Picture of the Day
My shot of the Tulip Nebula, Sh2-101, was selected as an APOD (Astronomy Picture of the Day) by NASA. You can see the NASA page here: http://apod.nasa.gov/apod/ap141115.html
The Tulip Nebula
In constellation Cygnus
Originla blog post about this image, with technical details, can be seen here:
You can buy a real museum quality photographic print from HERE
This is my seventh APOD, older ones can be seen here:
http://apod.nasa.gov/apod/ap131214.html
http://apod.nasa.gov/apod/ap110218.htmlhttp://apod.nasa.gov/apod/ap131214.html
Thursday, November 13, 2014
DWB-111, the Propeller nebula
The data for this object is shot at 31.10 last month but I got it processed just now.
The data for the emission of ionized Oxygen and Sulfur (O-III and S-II) is borrowed from my wide field shot of the area back from the first light image of Autumn 2011.
DWB-111, the Propeller Nebula
In constellation Cygnus, click for a large images
An experimental starless view
Info
Propeller Nebula (DWB 111, MRSL 497). This S-like formation is part of the much large area of emission nebula in constellation Cygnus. There are very little information about the origin and distance of this structure is unknown.
Image in visual colors
A wide field image of the nebula
http://astroanarchy.blogspot.fi/2011/10/first-light-for-autumn-season-2011.html
Also O-III and S-II channels are borrowed from this photo.
Orientation in Cygnus
Technical details
Processing work flow
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.
Imaging optics
Celestron Edge HD 1100 @ f7 with 0,7 focal reducer for Edge HD 1100 telescope
Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x2
Astrodon filter, 5 nm H-alpha
Exposure times
H-alpha, 12 x 1200s = 4h
O-III & S-II from an older wide field photo of mine.
O-III & S-II from an older wide field photo of mine.
A single un cropped, calibrated and stretched 20 min. H-alpha frame
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